Workspace.java revision f16e571330f030e445c4f7f63f55d093337ffd87
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import java.util.ArrayList; 68import java.util.HashSet; 69import java.util.List; 70 71/** 72 * The workspace is a wide area with a wallpaper and a finite number of pages. 73 * Each page contains a number of icons, folders or widgets the user can 74 * interact with. A workspace is meant to be used with a fixed width only. 75 */ 76public class Workspace extends SmoothPagedView 77 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 78 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // This is how much the workspace shrinks when we enter all apps or 82 // customization mode 83 private static final float SHRINK_FACTOR = 0.16f; 84 85 // How much the screens shrink when we enter spring loaded drag mode 86 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 87 88 // Y rotation to apply to the workspace screens 89 private static final float WORKSPACE_ROTATION = 12.5f; 90 91 // These are extra scale factors to apply to the mini home screens 92 // so as to achieve the desired transform 93 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 94 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 95 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 96 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 99 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 100 101 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 102 private static final int BACKGROUND_FADE_IN_DURATION = 350; 103 104 // These animators are used to fade the children's outlines 105 private ObjectAnimator mChildrenOutlineFadeInAnimation; 106 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 107 private float mChildrenOutlineAlpha = 0; 108 109 // These properties refer to the background protection gradient used for AllApps and Customize 110 private ObjectAnimator mBackgroundFadeInAnimation; 111 private ObjectAnimator mBackgroundFadeOutAnimation; 112 private Drawable mBackground; 113 private Drawable mCustomizeTrayBackground; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 126 private int mDefaultPage; 127 128 private boolean mPageMoving = false; 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 /** 207 * Used to inflate the Workspace from XML. 208 * 209 * @param context The application's context. 210 * @param attrs The attributes set containing the Workspace's customization values. 211 */ 212 public Workspace(Context context, AttributeSet attrs) { 213 this(context, attrs, 0); 214 } 215 216 /** 217 * Used to inflate the Workspace from XML. 218 * 219 * @param context The application's context. 220 * @param attrs The attributes set containing the Workspace's customization values. 221 * @param defStyle Unused. 222 */ 223 public Workspace(Context context, AttributeSet attrs, int defStyle) { 224 super(context, attrs, defStyle); 225 mContentIsRefreshable = false; 226 227 if (!LauncherApplication.isScreenXLarge()) { 228 mFadeInAdjacentScreens = false; 229 } 230 231 mWallpaperManager = WallpaperManager.getInstance(context); 232 233 TypedArray a = context.obtainStyledAttributes(attrs, 234 R.styleable.Workspace, defStyle, 0); 235 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 236 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 237 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 238 a.recycle(); 239 240 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 241 setHapticFeedbackEnabled(false); 242 243 initWorkspace(); 244 } 245 246 /** 247 * Initializes various states for this workspace. 248 */ 249 protected void initWorkspace() { 250 Context context = getContext(); 251 mCurrentPage = mDefaultPage; 252 Launcher.setScreen(mCurrentPage); 253 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 254 mIconCache = app.getIconCache(); 255 mExternalDragOutlinePaint.setAntiAlias(true); 256 setWillNotDraw(false); 257 258 try { 259 final Resources res = getResources(); 260 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 261 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 262 } catch (Resources.NotFoundException e) { 263 // In this case, we will skip drawing background protection 264 } 265 266 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 267 @Override 268 public void onAnimationStart(Animator animation) { 269 mIsInUnshrinkAnimation = true; 270 disableCacheUpdates(); 271 } 272 @Override 273 public void onAnimationEnd(Animator animation) { 274 mIsInUnshrinkAnimation = false; 275 if (mShrinkState != ShrinkState.SPRING_LOADED) { 276 mDrawCustomizeTrayBackground = false; 277 } 278 enableCacheUpdates(); 279 } 280 }; 281 mShrinkAnimationListener = new AnimatorListenerAdapter() { 282 @Override 283 public void onAnimationStart(Animator animation) { 284 disableCacheUpdates(); 285 } 286 @Override 287 public void onAnimationEnd(Animator animation) { 288 enableCacheUpdates(); 289 } 290 }; 291 mSnapVelocity = 600; 292 } 293 294 @Override 295 protected int getScrollMode() { 296 if (LauncherApplication.isScreenXLarge()) { 297 return SmoothPagedView.X_LARGE_MODE; 298 } else { 299 return SmoothPagedView.DEFAULT_MODE; 300 } 301 } 302 303 @Override 304 public void addView(View child, int index, LayoutParams params) { 305 if (!(child instanceof CellLayout)) { 306 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 307 } 308 ((CellLayout) child).setOnInterceptTouchListener(this); 309 super.addView(child, index, params); 310 } 311 312 @Override 313 public void addView(View child) { 314 if (!(child instanceof CellLayout)) { 315 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 316 } 317 ((CellLayout) child).setOnInterceptTouchListener(this); 318 super.addView(child); 319 } 320 321 @Override 322 public void addView(View child, int index) { 323 if (!(child instanceof CellLayout)) { 324 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 325 } 326 ((CellLayout) child).setOnInterceptTouchListener(this); 327 super.addView(child, index); 328 } 329 330 @Override 331 public void addView(View child, int width, int height) { 332 if (!(child instanceof CellLayout)) { 333 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 334 } 335 ((CellLayout) child).setOnInterceptTouchListener(this); 336 super.addView(child, width, height); 337 } 338 339 @Override 340 public void addView(View child, LayoutParams params) { 341 if (!(child instanceof CellLayout)) { 342 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 343 } 344 ((CellLayout) child).setOnInterceptTouchListener(this); 345 super.addView(child, params); 346 } 347 348 /** 349 * @return The open folder on the current screen, or null if there is none 350 */ 351 Folder getOpenFolder() { 352 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 353 int count = currentPage.getChildCount(); 354 for (int i = 0; i < count; i++) { 355 View child = currentPage.getChildAt(i); 356 if (child instanceof Folder) { 357 Folder folder = (Folder) child; 358 if (folder.getInfo().opened) 359 return folder; 360 } 361 } 362 return null; 363 } 364 365 ArrayList<Folder> getOpenFolders() { 366 final int screenCount = getChildCount(); 367 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 368 369 for (int screen = 0; screen < screenCount; screen++) { 370 CellLayout currentPage = (CellLayout) getChildAt(screen); 371 int count = currentPage.getChildCount(); 372 for (int i = 0; i < count; i++) { 373 View child = currentPage.getChildAt(i); 374 if (child instanceof Folder) { 375 Folder folder = (Folder) child; 376 if (folder.getInfo().opened) 377 folders.add(folder); 378 break; 379 } 380 } 381 } 382 return folders; 383 } 384 385 boolean isDefaultPageShowing() { 386 return mCurrentPage == mDefaultPage; 387 } 388 389 /** 390 * Sets the current screen. 391 * 392 * @param currentPage 393 */ 394 @Override 395 void setCurrentPage(int currentPage) { 396 super.setCurrentPage(currentPage); 397 updateWallpaperOffset(); 398 } 399 400 /** 401 * Adds the specified child in the specified screen. The position and dimension of 402 * the child are defined by x, y, spanX and spanY. 403 * 404 * @param child The child to add in one of the workspace's screens. 405 * @param screen The screen in which to add the child. 406 * @param x The X position of the child in the screen's grid. 407 * @param y The Y position of the child in the screen's grid. 408 * @param spanX The number of cells spanned horizontally by the child. 409 * @param spanY The number of cells spanned vertically by the child. 410 */ 411 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 412 addInScreen(child, screen, x, y, spanX, spanY, false); 413 } 414 415 void addInFullScreen(View child, int screen) { 416 addInScreen(child, screen, 0, 0, -1, -1); 417 } 418 419 /** 420 * Adds the specified child in the specified screen. The position and dimension of 421 * the child are defined by x, y, spanX and spanY. 422 * 423 * @param child The child to add in one of the workspace's screens. 424 * @param screen The screen in which to add the child. 425 * @param x The X position of the child in the screen's grid. 426 * @param y The Y position of the child in the screen's grid. 427 * @param spanX The number of cells spanned horizontally by the child. 428 * @param spanY The number of cells spanned vertically by the child. 429 * @param insert When true, the child is inserted at the beginning of the children list. 430 */ 431 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 432 if (screen < 0 || screen >= getChildCount()) { 433 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 434 + " (was " + screen + "); skipping child"); 435 return; 436 } 437 438 final CellLayout group = (CellLayout) getChildAt(screen); 439 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 440 if (lp == null) { 441 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 442 } else { 443 lp.cellX = x; 444 lp.cellY = y; 445 lp.cellHSpan = spanX; 446 lp.cellVSpan = spanY; 447 } 448 449 // Get the canonical child id to uniquely represent this view in this screen 450 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 451 boolean markCellsAsOccupied = !(child instanceof Folder); 452 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 453 // TODO: This branch occurs when the workspace is adding views 454 // outside of the defined grid 455 // maybe we should be deleting these items from the LauncherModel? 456 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 457 } 458 459 if (!(child instanceof Folder)) { 460 child.setHapticFeedbackEnabled(false); 461 child.setOnLongClickListener(mLongClickListener); 462 } 463 if (child instanceof DropTarget) { 464 mDragController.addDropTarget((DropTarget) child); 465 } 466 } 467 468 public boolean onTouch(View v, MotionEvent event) { 469 // this is an intercepted event being forwarded from a cell layout 470 if (mIsSmall || mIsInUnshrinkAnimation) { 471 // Only allow clicks on a CellLayout if it is visible 472 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 473 mLauncher.onWorkspaceClick((CellLayout) v); 474 } 475 return true; 476 } else if (!mPageMoving) { 477 if (v == getChildAt(mCurrentPage - 1)) { 478 snapToPage(mCurrentPage - 1); 479 return true; 480 } else if (v == getChildAt(mCurrentPage + 1)) { 481 snapToPage(mCurrentPage + 1); 482 return true; 483 } 484 } 485 return false; 486 } 487 488 protected void onWindowVisibilityChanged (int visibility) { 489 mLauncher.onWindowVisibilityChanged(visibility); 490 } 491 492 @Override 493 public boolean dispatchUnhandledMove(View focused, int direction) { 494 if (mIsSmall || mIsInUnshrinkAnimation) { 495 // when the home screens are shrunken, shouldn't allow side-scrolling 496 return false; 497 } 498 return super.dispatchUnhandledMove(focused, direction); 499 } 500 501 @Override 502 public boolean onInterceptTouchEvent(MotionEvent ev) { 503 if (mIsSmall || mIsInUnshrinkAnimation) { 504 if (mLauncher.isAllAppsVisible() && 505 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 506 // Intercept this event so we can show the workspace in full view 507 // when it is clicked on and it is small 508 return true; 509 } 510 return false; 511 } 512 return super.onInterceptTouchEvent(ev); 513 } 514 515 @Override 516 protected void determineScrollingStart(MotionEvent ev) { 517 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 518 } 519 520 protected void onPageBeginMoving() { 521 if (mNextPage != INVALID_PAGE) { 522 // we're snapping to a particular screen 523 enableChildrenCache(mCurrentPage, mNextPage); 524 } else { 525 // this is when user is actively dragging a particular screen, they might 526 // swipe it either left or right (but we won't advance by more than one screen) 527 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 528 } 529 showOutlines(); 530 mPageMoving = true; 531 } 532 533 protected void onPageEndMoving() { 534 clearChildrenCache(); 535 // Hide the outlines, as long as we're not dragging 536 if (!mDragController.dragging()) { 537 hideOutlines(); 538 } 539 mOverScrollMaxBackgroundAlpha = 0.0f; 540 mOverScrollPageIndex = -1; 541 mPageMoving = false; 542 } 543 544 @Override 545 protected void notifyPageSwitchListener() { 546 super.notifyPageSwitchListener(); 547 548 if (mPreviousIndicator != null) { 549 // if we know the next page, we show the indication for it right away; it looks 550 // weird if the indicators are lagging 551 int page = mNextPage; 552 if (page == INVALID_PAGE) { 553 page = mCurrentPage; 554 } 555 mPreviousIndicator.setLevel(page); 556 mNextIndicator.setLevel(page); 557 } 558 Launcher.setScreen(mCurrentPage); 559 }; 560 561 private void updateWallpaperOffset() { 562 if (LauncherApplication.isScreenXLarge()) { 563 IBinder token = getWindowToken(); 564 int scrollRange = getChildOffset(getChildCount() - 1) - getChildOffset(0); 565 if (token != null) { 566 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0); 567 float offset = mScrollX / (float) scrollRange; 568 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 569 Math.max(0.f, Math.min(offset, 1.0f)), 0); 570 } 571 } 572 } 573 574 @Override 575 public void computeScroll() { 576 super.computeScroll(); 577 updateWallpaperOffset(); 578 } 579 580 public void showOutlines() { 581 if (!mIsSmall && !mIsInUnshrinkAnimation) { 582 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 583 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 584 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 585 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 586 mChildrenOutlineFadeInAnimation.start(); 587 } 588 } 589 590 public void hideOutlines() { 591 if (!mIsSmall && !mIsInUnshrinkAnimation) { 592 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 593 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 594 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 595 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 596 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 597 mChildrenOutlineFadeOutAnimation.start(); 598 } 599 } 600 601 public void setChildrenOutlineAlpha(float alpha) { 602 mChildrenOutlineAlpha = alpha; 603 for (int i = 0; i < getChildCount(); i++) { 604 CellLayout cl = (CellLayout) getChildAt(i); 605 cl.setBackgroundAlpha(alpha); 606 } 607 } 608 609 public float getChildrenOutlineAlpha() { 610 return mChildrenOutlineAlpha; 611 } 612 613 private void showBackgroundGradientForAllApps() { 614 showBackgroundGradient(); 615 mDrawCustomizeTrayBackground = false; 616 } 617 618 private void showBackgroundGradientForCustomizeTray() { 619 showBackgroundGradient(); 620 mDrawCustomizeTrayBackground = true; 621 } 622 623 private void showBackgroundGradient() { 624 if (mBackground == null) return; 625 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 626 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 627 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 628 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 629 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 630 mBackgroundFadeInAnimation.start(); 631 } 632 633 private void hideBackgroundGradient() { 634 if (mBackground == null) return; 635 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 636 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 637 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 638 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 639 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 640 mBackgroundFadeOutAnimation.start(); 641 } 642 643 public void setBackgroundAlpha(float alpha) { 644 mBackgroundAlpha = alpha; 645 invalidate(); 646 } 647 648 public float getBackgroundAlpha() { 649 return mBackgroundAlpha; 650 } 651 652 /** 653 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 654 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 655 * as being larger. This method computes what offset the rotated view should be translated 656 * in order to minimize this perceived gap. 657 * @param degrees Angle of the view 658 * @param width Width of the view 659 * @param height Height of the view 660 * @return Offset to be used in a View.setTranslationX() call 661 */ 662 private float getOffsetXForRotation(float degrees, int width, int height) { 663 mMatrix.reset(); 664 mCamera.save(); 665 mCamera.rotateY(Math.abs(degrees)); 666 mCamera.getMatrix(mMatrix); 667 mCamera.restore(); 668 669 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 670 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 671 mTempFloat2[0] = width; 672 mTempFloat2[1] = height; 673 mMatrix.mapPoints(mTempFloat2); 674 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 675 } 676 677 float backgroundAlphaInterpolator(float r) { 678 float pivotA = 0.1f; 679 float pivotB = 0.4f; 680 if (r < pivotA) { 681 return 0; 682 } else if (r > pivotB) { 683 return 1.0f; 684 } else { 685 return (r - pivotA)/(pivotB - pivotA); 686 } 687 } 688 689 float overScrollBackgroundAlphaInterpolator(float r) { 690 float threshold = 0.08f; 691 692 if (r > mOverScrollMaxBackgroundAlpha) { 693 mOverScrollMaxBackgroundAlpha = r; 694 } else if (r < mOverScrollMaxBackgroundAlpha) { 695 r = mOverScrollMaxBackgroundAlpha; 696 } 697 698 return Math.min(r / threshold, 1.0f); 699 } 700 701 @Override 702 protected void screenScrolled(int screenCenter) { 703 final int halfScreenSize = getMeasuredWidth() / 2; 704 705 for (int i = 0; i < getChildCount(); i++) { 706 CellLayout cl = (CellLayout) getChildAt(i); 707 if (cl != null) { 708 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 709 int delta = screenCenter - (getChildOffset(i) - 710 getRelativeChildOffset(i) + halfScreenSize); 711 712 float scrollProgress = delta / (totalDistance * 1.0f); 713 scrollProgress = Math.min(scrollProgress, 1.0f); 714 scrollProgress = Math.max(scrollProgress, -1.0f); 715 716 // If the current page (i) is being overscrolled, we use a different 717 // set of rules for setting the background alpha multiplier. 718 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 719 i == getChildCount() -1 )) { 720 cl.setBackgroundAlphaMultiplier( 721 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 722 mOverScrollPageIndex = i; 723 } else if (mOverScrollPageIndex != i) { 724 cl.setBackgroundAlphaMultiplier( 725 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 726 727 } 728 729 float rotation = WORKSPACE_ROTATION * scrollProgress; 730 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 731 cl.setTranslationX(translationX); 732 733 cl.setRotationY(rotation); 734 } 735 } 736 } 737 738 protected void onAttachedToWindow() { 739 super.onAttachedToWindow(); 740 computeScroll(); 741 mDragController.setWindowToken(getWindowToken()); 742 } 743 744 @Override 745 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 746 super.onLayout(changed, left, top, right, bottom); 747 748 // if shrinkToBottom() is called on initialization, it has to be deferred 749 // until after the first call to onLayout so that it has the correct width 750 if (mWaitingToShrink) { 751 // shrink can trigger a synchronous onLayout call, so we 752 // post this to avoid a stack overflow / tangled onLayout calls 753 post(new Runnable() { 754 public void run() { 755 shrink(mWaitingToShrinkState, false); 756 mWaitingToShrink = false; 757 } 758 }); 759 } 760 761 if (LauncherApplication.isInPlaceRotationEnabled()) { 762 // When the device is rotated, the scroll position of the current screen 763 // needs to be refreshed 764 setCurrentPage(getCurrentPage()); 765 } 766 } 767 768 public void enableCacheUpdates() { 769 final int pageCount = getChildCount(); 770 for (int i = 0; i < pageCount; i++) { 771 final CellLayout page = (CellLayout) getChildAt(i); 772 page.enableCacheUpdates(); 773 } 774 } 775 776 public void disableCacheUpdates() { 777 final int pageCount = getChildCount(); 778 for (int i = 0; i < pageCount; i++) { 779 final CellLayout page = (CellLayout) getChildAt(i); 780 page.disableCacheUpdates(); 781 } 782 } 783 784 @Override 785 protected void onDraw(Canvas canvas) { 786 // Draw the background gradient if necessary 787 if (mBackground != null && mBackgroundAlpha > 0.0f) { 788 int alpha = (int) (mBackgroundAlpha * 255); 789 if (mDrawCustomizeTrayBackground) { 790 // Find out where to offset the gradient for the customization tray content 791 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 792 final Matrix m = mCustomizationDrawer.getMatrix(); 793 mCustomizationDrawerTransformedPos[0] = 0.0f; 794 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 795 m.mapPoints(mCustomizationDrawerTransformedPos); 796 797 // Draw the bg glow behind the gradient 798 mCustomizeTrayBackground.setAlpha(alpha); 799 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 800 getMeasuredHeight()); 801 mCustomizeTrayBackground.draw(canvas); 802 803 // Draw the bg gradient 804 final int offset = (int) (mCustomizationDrawerPos[1] + 805 mCustomizationDrawerTransformedPos[1]); 806 mBackground.setAlpha(alpha); 807 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 808 offset + getMeasuredHeight()); 809 mBackground.draw(canvas); 810 } else { 811 mBackground.setAlpha(alpha); 812 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 813 getMeasuredHeight()); 814 mBackground.draw(canvas); 815 } 816 } 817 super.onDraw(canvas); 818 } 819 820 @Override 821 protected void dispatchDraw(Canvas canvas) { 822 if (mIsSmall || mIsInUnshrinkAnimation) { 823 // Draw all the workspaces if we're small 824 final int pageCount = getChildCount(); 825 final long drawingTime = getDrawingTime(); 826 for (int i = 0; i < pageCount; i++) { 827 final View page = (View) getChildAt(i); 828 829 drawChild(canvas, page, drawingTime); 830 } 831 } else { 832 super.dispatchDraw(canvas); 833 834 final int width = getWidth(); 835 final int height = getHeight(); 836 837 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 838 if (mInScrollArea && (height > width)) { 839 final int pageHeight = getChildAt(0).getHeight(); 840 841 // This determines the height of the glowing edge: 90% of the page height 842 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 843 844 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 845 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 846 847 if (leftPage != null && leftPage.getIsDragOverlapping()) { 848 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 849 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 850 d.draw(canvas); 851 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 852 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 853 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 854 d.draw(canvas); 855 } 856 } 857 858 if (mDropView != null) { 859 // We are animating an item that was just dropped on the home screen. 860 // Render its View in the current animation position. 861 canvas.save(Canvas.MATRIX_SAVE_FLAG); 862 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 863 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 864 canvas.translate(xPos, yPos); 865 mDropView.draw(canvas); 866 canvas.restore(); 867 } 868 } 869 } 870 871 @Override 872 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 873 if (!mLauncher.isAllAppsVisible()) { 874 final Folder openFolder = getOpenFolder(); 875 if (openFolder != null) { 876 return openFolder.requestFocus(direction, previouslyFocusedRect); 877 } else { 878 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 879 } 880 } 881 return false; 882 } 883 884 @Override 885 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 886 if (!mLauncher.isAllAppsVisible()) { 887 final Folder openFolder = getOpenFolder(); 888 if (openFolder != null) { 889 openFolder.addFocusables(views, direction); 890 } else { 891 super.addFocusables(views, direction, focusableMode); 892 } 893 } 894 } 895 896 @Override 897 public boolean dispatchTouchEvent(MotionEvent ev) { 898 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 899 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 900 // ie when you click on a mini-screen, it zooms back to that screen) 901 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 902 return false; 903 } 904 } 905 906 return super.dispatchTouchEvent(ev); 907 } 908 909 void enableChildrenCache(int fromPage, int toPage) { 910 if (fromPage > toPage) { 911 final int temp = fromPage; 912 fromPage = toPage; 913 toPage = temp; 914 } 915 916 final int screenCount = getChildCount(); 917 918 fromPage = Math.max(fromPage, 0); 919 toPage = Math.min(toPage, screenCount - 1); 920 921 for (int i = fromPage; i <= toPage; i++) { 922 final CellLayout layout = (CellLayout) getChildAt(i); 923 layout.setChildrenDrawnWithCacheEnabled(true); 924 layout.setChildrenDrawingCacheEnabled(true); 925 } 926 } 927 928 void clearChildrenCache() { 929 final int screenCount = getChildCount(); 930 for (int i = 0; i < screenCount; i++) { 931 final CellLayout layout = (CellLayout) getChildAt(i); 932 layout.setChildrenDrawnWithCacheEnabled(false); 933 } 934 } 935 936 @Override 937 public boolean onTouchEvent(MotionEvent ev) { 938 if (mLauncher.isAllAppsVisible()) { 939 // Cancel any scrolling that is in progress. 940 if (!mScroller.isFinished()) { 941 mScroller.abortAnimation(); 942 } 943 setCurrentPage(mCurrentPage); 944 945 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 946 mLauncher.showWorkspace(true); 947 // Let the events fall through to the CellLayouts because if they are not 948 // hit, then we get a crash due to a missing ACTION_DOWN touch event 949 } 950 951 return false; // We don't want the events 952 } 953 954 return super.onTouchEvent(ev); 955 } 956 957 @Override 958 protected void onWallpaperTap(MotionEvent ev) { 959 final int[] position = mTempCell; 960 getLocationOnScreen(position); 961 962 int pointerIndex = ev.getActionIndex(); 963 position[0] += (int) ev.getX(pointerIndex); 964 position[1] += (int) ev.getY(pointerIndex); 965 966 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 967 ev.getAction() == MotionEvent.ACTION_UP 968 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 969 position[0], position[1], 0, null); 970 } 971 972 public boolean isSmall() { 973 return mIsSmall; 974 } 975 976 private float getYScaleForScreen(int screen) { 977 int x = Math.abs(screen - 2); 978 979 // TODO: This should be generalized for use with arbitrary rotation angles. 980 switch(x) { 981 case 0: return EXTRA_SCALE_FACTOR_0; 982 case 1: return EXTRA_SCALE_FACTOR_1; 983 case 2: return EXTRA_SCALE_FACTOR_2; 984 } 985 return 1.0f; 986 } 987 988 public void shrink(ShrinkState shrinkState) { 989 shrink(shrinkState, true); 990 } 991 992 // we use this to shrink the workspace for the all apps view and the customize view 993 public void shrink(ShrinkState shrinkState, boolean animated) { 994 if (mFirstLayout) { 995 // (mFirstLayout == "first layout has not happened yet") 996 // if we get a call to shrink() as part of our initialization (for example, if 997 // Launcher is started in All Apps mode) then we need to wait for a layout call 998 // to get our width so we can layout the mini-screen views correctly 999 mWaitingToShrink = true; 1000 mWaitingToShrinkState = shrinkState; 1001 return; 1002 } 1003 mIsSmall = true; 1004 mShrinkState = shrinkState; 1005 1006 // Stop any scrolling, move to the current page right away 1007 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1008 if (!mIsDragInProcess) { 1009 updateWhichPagesAcceptDrops(mShrinkState); 1010 } 1011 1012 // we intercept and reject all touch events when we're small, so be sure to reset the state 1013 mTouchState = TOUCH_STATE_REST; 1014 mActivePointerId = INVALID_POINTER; 1015 1016 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1017 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1018 currentPage.setBackgroundAlpha(0.0f); 1019 } 1020 currentPage.setBackgroundAlphaMultiplier(1.0f); 1021 1022 final Resources res = getResources(); 1023 final int screenWidth = getWidth(); 1024 final int screenHeight = getHeight(); 1025 1026 // Making the assumption that all pages have the same width as the 0th 1027 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1028 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1029 1030 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1031 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1032 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1033 1034 final int screenCount = getChildCount(); 1035 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1036 1037 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1038 float newY = (isPortrait ? 1039 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1040 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1041 float finalAlpha = 1.0f; 1042 float extraShrinkFactor = 1.0f; 1043 1044 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1045 newY = screenHeight - newY - scaledPageHeight; 1046 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1047 1048 // We shrink and disappear to nothing in the case of all apps 1049 // (which is when we shrink to the bottom) 1050 newY = screenHeight - newY - scaledPageHeight; 1051 finalAlpha = 0.0f; 1052 } else if (shrinkState == ShrinkState.MIDDLE) { 1053 newY = screenHeight / 2 - scaledPageHeight / 2; 1054 finalAlpha = 1.0f; 1055 } else if (shrinkState == ShrinkState.TOP) { 1056 newY = (isPortrait ? 1057 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1058 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1059 } 1060 1061 int duration; 1062 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1063 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1064 } else { 1065 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1066 } 1067 1068 // We animate all the screens to the centered position in workspace 1069 // At the same time, the screens become greyed/dimmed 1070 1071 // newX is initialized to the left-most position of the centered screens 1072 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1073 1074 // We are going to scale about the center of the view, so we need to adjust the positions 1075 // of the views accordingly 1076 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1077 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1078 1079 if (mAnimator != null) { 1080 mAnimator.cancel(); 1081 } 1082 1083 mAnimator = new AnimatorSet(); 1084 for (int i = 0; i < screenCount; i++) { 1085 final CellLayout cl = (CellLayout) getChildAt(i); 1086 1087 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1088 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1089 float rotationScaleY = getYScaleForScreen(i); 1090 1091 if (animated) { 1092 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1093 PropertyValuesHolder.ofFloat("x", newX), 1094 PropertyValuesHolder.ofFloat("y", newY), 1095 PropertyValuesHolder.ofFloat("scaleX", 1096 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1097 PropertyValuesHolder.ofFloat("scaleY", 1098 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1099 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1100 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1101 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1102 1103 animWithInterpolator.setDuration(duration); 1104 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1105 mAnimator.playTogether(animWithInterpolator); 1106 } else { 1107 cl.setX((int)newX); 1108 cl.setY((int)newY); 1109 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1110 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1111 cl.setBackgroundAlpha(finalAlpha); 1112 cl.setAlpha(finalAlpha); 1113 cl.setRotationY(rotation); 1114 mShrinkAnimationListener.onAnimationEnd(null); 1115 } 1116 // increment newX for the next screen 1117 newX += scaledPageWidth + extraScaledSpacing; 1118 } 1119 setLayoutScale(1.0f); 1120 if (animated) { 1121 mAnimator.addListener(mShrinkAnimationListener); 1122 mAnimator.start(); 1123 } 1124 setChildrenDrawnWithCacheEnabled(true); 1125 1126 if (shrinkState == ShrinkState.TOP) { 1127 showBackgroundGradientForCustomizeTray(); 1128 } else { 1129 showBackgroundGradientForAllApps(); 1130 } 1131 } 1132 1133 /* 1134 * This interpolator emulates the rate at which the perceived scale of an object changes 1135 * as its distance from a camera increases. When this interpolator is applied to a scale 1136 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1137 * from the camera. 1138 */ 1139 static class ZInterpolator implements TimeInterpolator { 1140 private float focalLength; 1141 1142 public ZInterpolator(float foc) { 1143 focalLength = foc; 1144 } 1145 1146 public float getInterpolation(float input) { 1147 return (1.0f - focalLength / (focalLength + input)) / 1148 (1.0f - focalLength / (focalLength + 1.0f)); 1149 } 1150 } 1151 1152 /* 1153 * The exact reverse of ZInterpolator. 1154 */ 1155 static class InverseZInterpolator implements TimeInterpolator { 1156 private ZInterpolator zInterpolator; 1157 public InverseZInterpolator(float foc) { 1158 zInterpolator = new ZInterpolator(foc); 1159 } 1160 public float getInterpolation(float input) { 1161 return 1 - zInterpolator.getInterpolation(1 - input); 1162 } 1163 } 1164 1165 /* 1166 * ZInterpolator compounded with an ease-out. 1167 */ 1168 static class ZoomOutInterpolator implements TimeInterpolator { 1169 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1170 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1171 1172 public float getInterpolation(float input) { 1173 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1174 } 1175 } 1176 1177 /* 1178 * InvereZInterpolator compounded with an ease-out. 1179 */ 1180 static class ZoomInInterpolator implements TimeInterpolator { 1181 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1182 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1183 1184 public float getInterpolation(float input) { 1185 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1186 } 1187 } 1188 1189 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1190 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1191 1192 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1193 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1194 } 1195 1196 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1197 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1198 } 1199 1200 private void updateWhichPagesAcceptDropsHelper( 1201 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1202 final int screenCount = getChildCount(); 1203 for (int i = 0; i < screenCount; i++) { 1204 CellLayout cl = (CellLayout) getChildAt(i); 1205 cl.setIsDragOccuring(isDragHappening); 1206 switch (state) { 1207 case TOP: 1208 cl.setIsDefaultDropTarget(i == mCurrentPage); 1209 case BOTTOM_HIDDEN: 1210 case BOTTOM_VISIBLE: 1211 if (!isDragHappening) { 1212 // even if a drag isn't happening, we don't want to show a screen as 1213 // accepting drops if it doesn't have at least one free cell 1214 spanX = 1; 1215 spanY = 1; 1216 } 1217 // the page accepts drops if we can find at least one empty spot 1218 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1219 break; 1220 default: 1221 throw new RuntimeException( 1222 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1223 } 1224 } 1225 } 1226 1227 /* 1228 * 1229 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1230 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1231 * 1232 * These methods mark the appropriate pages as accepting drops (which alters their visual 1233 * appearance). 1234 * 1235 */ 1236 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1237 mIsDragInProcess = true; 1238 1239 final Canvas canvas = new Canvas(); 1240 1241 // We need to add extra padding to the bitmap to make room for the glow effect 1242 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1243 1244 // The outline is used to visualize where the item will land if dropped 1245 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1246 1247 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1248 } 1249 1250 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1251 // never dragged over 1252 public void onDragStopped() { 1253 mIsDragInProcess = false; 1254 updateWhichPagesAcceptDrops(mShrinkState); 1255 } 1256 1257 @Override 1258 protected boolean handlePagingClicks() { 1259 return true; 1260 } 1261 1262 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1263 public void unshrink(CellLayout clThatWasClicked) { 1264 unshrink(clThatWasClicked, false); 1265 } 1266 1267 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1268 int newCurrentPage = indexOfChild(clThatWasClicked); 1269 if (mIsSmall) { 1270 if (springLoaded) { 1271 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1272 } 1273 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1274 unshrink(true, springLoaded); 1275 } 1276 } 1277 1278 1279 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1280 mShrinkState = ShrinkState.SPRING_LOADED; 1281 unshrink(clThatWasClicked, true); 1282 mDragTargetLayout.onDragEnter(); 1283 } 1284 1285 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1286 shrink(shrinkState); 1287 if (mDragTargetLayout != null) { 1288 mDragTargetLayout.onDragExit(); 1289 } 1290 } 1291 1292 void unshrink(boolean animated) { 1293 unshrink(animated, false); 1294 } 1295 1296 void unshrink(boolean animated, boolean springLoaded) { 1297 if (mIsSmall) { 1298 float finalScaleFactor = 1.0f; 1299 float finalBackgroundAlpha = 0.0f; 1300 if (springLoaded) { 1301 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1302 finalBackgroundAlpha = 1.0f; 1303 } else { 1304 mIsSmall = false; 1305 } 1306 if (mAnimator != null) { 1307 mAnimator.cancel(); 1308 } 1309 1310 mAnimator = new AnimatorSet(); 1311 final int screenCount = getChildCount(); 1312 1313 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1314 for (int i = 0; i < screenCount; i++) { 1315 final CellLayout cl = (CellLayout)getChildAt(i); 1316 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1317 float finalAlphaMultiplierValue = 1318 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1319 0.0f : 1.0f; 1320 float rotation = 0.0f; 1321 1322 if (i < mCurrentPage) { 1323 rotation = WORKSPACE_ROTATION; 1324 } else if (i > mCurrentPage) { 1325 rotation = -WORKSPACE_ROTATION; 1326 } 1327 1328 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1329 1330 if (animated) { 1331 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1332 PropertyValuesHolder.ofFloat("translationX", translation), 1333 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1334 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1335 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1336 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1337 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1338 finalAlphaMultiplierValue), 1339 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1340 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1341 animWithInterpolator.setDuration(duration); 1342 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1343 mAnimator.playTogether(animWithInterpolator); 1344 } else { 1345 cl.setTranslationX(translation); 1346 cl.setTranslationY(0.0f); 1347 cl.setScaleX(finalScaleFactor); 1348 cl.setScaleY(finalScaleFactor); 1349 cl.setBackgroundAlpha(0.0f); 1350 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1351 cl.setAlpha(finalAlphaValue); 1352 cl.setRotationY(rotation); 1353 mUnshrinkAnimationListener.onAnimationEnd(null); 1354 } 1355 } 1356 1357 if (animated) { 1358 // If we call this when we're not animated, onAnimationEnd is never called on 1359 // the listener; make sure we only use the listener when we're actually animating 1360 mAnimator.addListener(mUnshrinkAnimationListener); 1361 mAnimator.start(); 1362 } 1363 } 1364 1365 if (!springLoaded) { 1366 hideBackgroundGradient(); 1367 } 1368 } 1369 1370 /** 1371 * Draw the View v into the given Canvas. 1372 * 1373 * @param v the view to draw 1374 * @param destCanvas the canvas to draw on 1375 * @param padding the horizontal and vertical padding to use when drawing 1376 */ 1377 private void drawDragView(View v, Canvas destCanvas, int padding) { 1378 final Rect clipRect = mTempRect; 1379 v.getDrawingRect(clipRect); 1380 1381 // For a TextView, adjust the clip rect so that we don't include the text label 1382 if (v instanceof BubbleTextView) { 1383 final BubbleTextView tv = (BubbleTextView) v; 1384 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1385 tv.getLayout().getLineTop(0); 1386 } else if (v instanceof TextView) { 1387 final TextView tv = (TextView) v; 1388 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1389 tv.getLayout().getLineTop(0); 1390 } 1391 1392 // Draw the View into the bitmap. 1393 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1394 // they set scrollX and scrollY to large values to achieve centered text 1395 1396 destCanvas.save(); 1397 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1398 destCanvas.clipRect(clipRect, Op.REPLACE); 1399 v.draw(destCanvas); 1400 destCanvas.restore(); 1401 } 1402 1403 /** 1404 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1405 * Responsibility for the bitmap is transferred to the caller. 1406 */ 1407 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1408 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1409 final Bitmap b = Bitmap.createBitmap( 1410 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1411 1412 canvas.setBitmap(b); 1413 drawDragView(v, canvas, padding); 1414 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1415 return b; 1416 } 1417 1418 /** 1419 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1420 * Responsibility for the bitmap is transferred to the caller. 1421 */ 1422 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1423 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1424 final Bitmap b = Bitmap.createBitmap( 1425 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1426 1427 canvas.setBitmap(b); 1428 canvas.drawBitmap(orig, 0, 0, new Paint()); 1429 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1430 1431 return b; 1432 } 1433 1434 /** 1435 * Creates a drag outline to represent a drop (that we don't have the actual information for 1436 * yet). May be changed in the future to alter the drop outline slightly depending on the 1437 * clip description mime data. 1438 */ 1439 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1440 Resources r = getResources(); 1441 final int outlineColor = r.getColor(R.color.drag_outline_color); 1442 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1443 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1444 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1445 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1446 final Bitmap b = Bitmap.createBitmap( 1447 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1448 1449 canvas.setBitmap(b); 1450 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1451 rectRadius, rectRadius, mExternalDragOutlinePaint); 1452 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1453 return b; 1454 } 1455 1456 /** 1457 * Returns a new bitmap to show when the given View is being dragged around. 1458 * Responsibility for the bitmap is transferred to the caller. 1459 */ 1460 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1461 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1462 final Bitmap b = Bitmap.createBitmap( 1463 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1464 1465 canvas.setBitmap(b); 1466 canvas.drawBitmap(mDragOutline, 0, 0, null); 1467 drawDragView(v, canvas, padding); 1468 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1469 1470 return b; 1471 } 1472 1473 void startDrag(CellLayout.CellInfo cellInfo) { 1474 View child = cellInfo.cell; 1475 1476 // Make sure the drag was started by a long press as opposed to a long click. 1477 if (!child.isInTouchMode()) { 1478 return; 1479 } 1480 1481 mDragInfo = cellInfo; 1482 mDragInfo.screen = mCurrentPage; 1483 1484 CellLayout current = getCurrentDropLayout(); 1485 1486 current.onDragChild(child); 1487 1488 child.clearFocus(); 1489 child.setPressed(false); 1490 1491 final Canvas canvas = new Canvas(); 1492 1493 // We need to add extra padding to the bitmap to make room for the glow effect 1494 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1495 1496 // The outline is used to visualize where the item will land if dropped 1497 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1498 1499 // The drag bitmap follows the touch point around on the screen 1500 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1501 1502 final int bmpWidth = b.getWidth(); 1503 final int bmpHeight = b.getHeight(); 1504 child.getLocationOnScreen(mTempXY); 1505 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1506 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1507 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1508 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1509 b.recycle(); 1510 } 1511 1512 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1513 boolean insertAtFirst, int intersectX, int intersectY) { 1514 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1515 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1516 1517 final int[] cellXY = new int[2]; 1518 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1519 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1520 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1521 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1522 cellXY[0], cellXY[1]); 1523 } 1524 1525 private void setPositionForDropAnimation( 1526 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1527 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1528 1529 // Based on the position of the drag view, find the top left of the original view 1530 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1531 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1532 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1533 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1534 1535 // Set its old pos (in the new parent's coordinates); it will be animated 1536 // in animateViewIntoPosition after the next layout pass 1537 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1538 lp.oldY = viewY - (parent.getTop() - mScrollY); 1539 } 1540 1541 /* 1542 * We should be careful that this method cannot result in any synchronous requestLayout() 1543 * calls, as it is called from onLayout(). 1544 */ 1545 public void animateViewIntoPosition(final View view) { 1546 final CellLayout parent = (CellLayout) view.getParent(); 1547 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1548 1549 // Convert the animation params to be relative to the Workspace, not the CellLayout 1550 final int fromX = lp.oldX + parent.getLeft(); 1551 final int fromY = lp.oldY + parent.getTop(); 1552 1553 final int dx = lp.x - lp.oldX; 1554 final int dy = lp.y - lp.oldY; 1555 1556 // Calculate the duration of the animation based on the object's distance 1557 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1558 final Resources res = getResources(); 1559 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1560 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1561 if (dist < maxDist) { 1562 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1563 } 1564 1565 if (mDropAnim != null) { 1566 mDropAnim.end(); 1567 } 1568 mDropAnim = new ValueAnimator(); 1569 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1570 1571 // The view is invisible during the animation; we render it manually. 1572 mDropAnim.addListener(new AnimatorListenerAdapter() { 1573 public void onAnimationStart(Animator animation) { 1574 // Set this here so that we don't render it until the animation begins 1575 mDropView = view; 1576 } 1577 1578 public void onAnimationEnd(Animator animation) { 1579 if (mDropView != null) { 1580 mDropView.setVisibility(View.VISIBLE); 1581 mDropView = null; 1582 } 1583 } 1584 }); 1585 1586 mDropAnim.setDuration(duration); 1587 mDropAnim.setFloatValues(0.0f, 1.0f); 1588 mDropAnim.removeAllUpdateListeners(); 1589 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1590 public void onAnimationUpdate(ValueAnimator animation) { 1591 final float percent = (Float) animation.getAnimatedValue(); 1592 // Invalidate the old position 1593 invalidate(mDropViewPos[0], mDropViewPos[1], 1594 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1595 1596 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1597 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1598 invalidate(mDropViewPos[0], mDropViewPos[1], 1599 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1600 } 1601 }); 1602 1603 mDropAnim.start(); 1604 } 1605 1606 /** 1607 * {@inheritDoc} 1608 */ 1609 public boolean acceptDrop(DragSource source, int x, int y, 1610 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1611 1612 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1613 if (source != this) { 1614 // Don't accept the drop if we're not over a screen at time of drop 1615 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1616 return false; 1617 } 1618 1619 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1620 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1621 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1622 1623 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1624 1625 // Don't accept the drop if there's no room for the item 1626 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1627 mLauncher.showOutOfSpaceMessage(); 1628 return false; 1629 } 1630 } 1631 return true; 1632 } 1633 1634 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1635 DragView dragView, Object dragInfo) { 1636 1637 int originX = x - xOffset; 1638 int originY = y - yOffset; 1639 1640 if (mIsSmall || mIsInUnshrinkAnimation) { 1641 // get originX and originY in the local coordinate system of the screen 1642 mTempOriginXY[0] = originX; 1643 mTempOriginXY[1] = originY; 1644 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1645 originX = (int)mTempOriginXY[0]; 1646 originY = (int)mTempOriginXY[1]; 1647 } 1648 1649 // When you drag to a particular screen, make that the new current/default screen, so any 1650 // subsequent taps add items to that screen 1651 int dragTargetIndex = indexOfChild(mDragTargetLayout); 1652 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 1653 moveToNewPageWithoutMovingCellLayouts(dragTargetIndex); 1654 } 1655 1656 if (source != this) { 1657 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1658 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1659 } else { 1660 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1661 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1662 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1663 } 1664 } else if (mDragInfo != null) { 1665 final View cell = mDragInfo.cell; 1666 CellLayout dropTargetLayout = mDragTargetLayout; 1667 1668 // Handle the case where the user drops when in the scroll area. 1669 // This is treated as a drop on the adjacent page. 1670 if (dropTargetLayout == null && mInScrollArea) { 1671 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1672 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1673 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1674 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1675 } 1676 } 1677 1678 if (dropTargetLayout != null) { 1679 // Move internally 1680 mTargetCell = findNearestVacantArea(originX, originY, 1681 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1682 mTargetCell); 1683 1684 final int screen = (mTargetCell == null) ? 1685 mDragInfo.screen : indexOfChild(dropTargetLayout); 1686 1687 if (screen != mCurrentPage) { 1688 snapToPage(screen); 1689 } 1690 1691 if (mTargetCell != null) { 1692 if (screen != mDragInfo.screen) { 1693 // Reparent the view 1694 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1695 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1696 mDragInfo.spanX, mDragInfo.spanY); 1697 } 1698 1699 // update the item's position after drop 1700 final ItemInfo info = (ItemInfo) cell.getTag(); 1701 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1702 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1703 lp.cellX = mTargetCell[0]; 1704 lp.cellY = mTargetCell[1]; 1705 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1706 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1707 1708 LauncherModel.moveItemInDatabase(mLauncher, info, 1709 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1710 lp.cellX, lp.cellY); 1711 } 1712 } 1713 1714 final CellLayout parent = (CellLayout) cell.getParent(); 1715 1716 // Prepare it to be animated into its new position 1717 // This must be called after the view has been re-parented 1718 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1719 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1720 parent.onDropChild(cell, animateDrop); 1721 } 1722 } 1723 1724 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1725 int yOffset, DragView dragView, Object dragInfo) { 1726 mDragTargetLayout = null; // Reset the drag state 1727 1728 if (!mIsSmall) { 1729 mDragTargetLayout = getCurrentDropLayout(); 1730 mDragTargetLayout.onDragEnter(); 1731 showOutlines(); 1732 } 1733 } 1734 1735 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1736 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1737 1738 if (mIsSmall || mIsInUnshrinkAnimation) { 1739 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1740 return null; 1741 } 1742 // We may need to delegate the drag to a child view. If a 1x1 item 1743 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1744 // then drag events should be handled by that child. 1745 1746 ItemInfo item = (ItemInfo)dragInfo; 1747 CellLayout currentLayout = getCurrentDropLayout(); 1748 1749 int dragPointX, dragPointY; 1750 if (item.spanX == 1 && item.spanY == 1) { 1751 // For a 1x1, calculate the drop cell exactly as in onDragOver 1752 dragPointX = x - xOffset; 1753 dragPointY = y - yOffset; 1754 } else { 1755 // Otherwise, use the exact drag coordinates 1756 dragPointX = x; 1757 dragPointY = y; 1758 } 1759 dragPointX += mScrollX - currentLayout.getLeft(); 1760 dragPointY += mScrollY - currentLayout.getTop(); 1761 1762 // If we are dragging over a cell that contains a DropTarget that will 1763 // accept the drop, delegate to that DropTarget. 1764 final int[] cellXY = mTempCell; 1765 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1766 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1767 if (child instanceof DropTarget) { 1768 DropTarget target = (DropTarget)child; 1769 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1770 return target; 1771 } 1772 } 1773 return null; 1774 } 1775 1776 /** 1777 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1778 * in the returned structure related to the widgets that match the drop (or a null list if it is 1779 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1780 */ 1781 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1782 final LauncherModel model = mLauncher.getModel(); 1783 final ClipDescription desc = event.getClipDescription(); 1784 final int mimeTypeCount = desc.getMimeTypeCount(); 1785 for (int i = 0; i < mimeTypeCount; ++i) { 1786 final String mimeType = desc.getMimeType(i); 1787 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1788 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1789 } else { 1790 final List<WidgetMimeTypeHandlerData> widgets = 1791 model.resolveWidgetsForMimeType(mContext, mimeType); 1792 if (widgets.size() > 0) { 1793 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1794 } 1795 } 1796 } 1797 return null; 1798 } 1799 1800 /** 1801 * Global drag and drop handler 1802 */ 1803 @Override 1804 public boolean onDragEvent(DragEvent event) { 1805 final ClipDescription desc = event.getClipDescription(); 1806 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1807 final int[] pos = new int[2]; 1808 layout.getLocationOnScreen(pos); 1809 // We need to offset the drag coordinates to layout coordinate space 1810 final int x = (int) event.getX() - pos[0]; 1811 final int y = (int) event.getY() - pos[1]; 1812 1813 switch (event.getAction()) { 1814 case DragEvent.ACTION_DRAG_STARTED: { 1815 // Validate this drag 1816 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1817 if (test != null) { 1818 boolean isShortcut = (test.second == null); 1819 if (isShortcut) { 1820 // Check if we have enough space on this screen to add a new shortcut 1821 if (!layout.findCellForSpan(pos, 1, 1)) { 1822 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1823 Toast.LENGTH_SHORT).show(); 1824 return false; 1825 } 1826 } 1827 } else { 1828 // Show error message if we couldn't accept any of the items 1829 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1830 Toast.LENGTH_SHORT).show(); 1831 return false; 1832 } 1833 1834 // Create the drag outline 1835 // We need to add extra padding to the bitmap to make room for the glow effect 1836 final Canvas canvas = new Canvas(); 1837 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1838 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1839 1840 // Show the current page outlines to indicate that we can accept this drop 1841 showOutlines(); 1842 layout.setIsDragOccuring(true); 1843 layout.onDragEnter(); 1844 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1845 1846 return true; 1847 } 1848 case DragEvent.ACTION_DRAG_LOCATION: 1849 // Visualize the drop location 1850 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1851 return true; 1852 case DragEvent.ACTION_DROP: { 1853 // Try and add any shortcuts 1854 final LauncherModel model = mLauncher.getModel(); 1855 final ClipData data = event.getClipData(); 1856 1857 // We assume that the mime types are ordered in descending importance of 1858 // representation. So we enumerate the list of mime types and alert the 1859 // user if any widgets can handle the drop. Only the most preferred 1860 // representation will be handled. 1861 pos[0] = x; 1862 pos[1] = y; 1863 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1864 if (test != null) { 1865 final int index = test.first; 1866 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1867 final boolean isShortcut = (widgets == null); 1868 final String mimeType = desc.getMimeType(index); 1869 if (isShortcut) { 1870 final Intent intent = data.getItem(index).getIntent(); 1871 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1872 onDropExternal(x, y, info, layout, false); 1873 } else { 1874 if (widgets.size() == 1) { 1875 // If there is only one item, then go ahead and add and configure 1876 // that widget 1877 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1878 final PendingAddWidgetInfo createInfo = 1879 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1880 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1881 } else { 1882 // Show the widget picker dialog if there is more than one widget 1883 // that can handle this data type 1884 final InstallWidgetReceiver.WidgetListAdapter adapter = 1885 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1886 data, widgets, layout, mCurrentPage, pos); 1887 final AlertDialog.Builder builder = 1888 new AlertDialog.Builder(mContext); 1889 builder.setAdapter(adapter, adapter); 1890 builder.setCancelable(true); 1891 builder.setTitle(mContext.getString( 1892 R.string.external_drop_widget_pick_title)); 1893 builder.setIcon(R.drawable.ic_no_applications); 1894 builder.show(); 1895 } 1896 } 1897 } 1898 return true; 1899 } 1900 case DragEvent.ACTION_DRAG_ENDED: 1901 // Hide the page outlines after the drop 1902 layout.setIsDragOccuring(false); 1903 layout.onDragExit(); 1904 hideOutlines(); 1905 return true; 1906 } 1907 return super.onDragEvent(event); 1908 } 1909 1910 /* 1911 * 1912 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1913 * coordinate space. The argument xy is modified with the return result. 1914 * 1915 */ 1916 void mapPointFromSelfToChild(View v, float[] xy) { 1917 mapPointFromSelfToChild(v, xy, null); 1918 } 1919 1920 /* 1921 * 1922 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1923 * coordinate space. The argument xy is modified with the return result. 1924 * 1925 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1926 * computing it itself; we use this to avoid redundant matrix inversions in 1927 * findMatchingPageForDragOver 1928 * 1929 */ 1930 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1931 if (cachedInverseMatrix == null) { 1932 v.getMatrix().invert(mTempInverseMatrix); 1933 cachedInverseMatrix = mTempInverseMatrix; 1934 } 1935 xy[0] = xy[0] + mScrollX - v.getLeft(); 1936 xy[1] = xy[1] + mScrollY - v.getTop(); 1937 cachedInverseMatrix.mapPoints(xy); 1938 } 1939 1940 /* 1941 * 1942 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1943 * the parent View's coordinate space. The argument xy is modified with the return result. 1944 * 1945 */ 1946 void mapPointFromChildToSelf(View v, float[] xy) { 1947 v.getMatrix().mapPoints(xy); 1948 xy[0] -= (mScrollX - v.getLeft()); 1949 xy[1] -= (mScrollY - v.getTop()); 1950 } 1951 1952 static private float squaredDistance(float[] point1, float[] point2) { 1953 float distanceX = point1[0] - point2[0]; 1954 float distanceY = point2[1] - point2[1]; 1955 return distanceX * distanceX + distanceY * distanceY; 1956 } 1957 1958 /* 1959 * 1960 * Returns true if the passed CellLayout cl overlaps with dragView 1961 * 1962 */ 1963 boolean overlaps(CellLayout cl, DragView dragView, 1964 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1965 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1966 final float[] draggedItemTopLeft = mTempDragCoordinates; 1967 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1968 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1969 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1970 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1971 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1972 1973 // Transform the dragged item's top left coordinates 1974 // to the CellLayout's local coordinates 1975 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1976 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1977 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1978 1979 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1980 // Transform the dragged item's bottom right coordinates 1981 // to the CellLayout's local coordinates 1982 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1983 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1984 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1985 1986 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1987 float overlap = (overlapRegionRight - overlapRegionLeft) * 1988 (overlapRegionBottom - overlapRegionTop); 1989 if (overlap > 0) { 1990 return true; 1991 } 1992 } 1993 } 1994 return false; 1995 } 1996 1997 /* 1998 * 1999 * This method returns the CellLayout that is currently being dragged to. In order to drag 2000 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2001 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2002 * 2003 * Return null if no CellLayout is currently being dragged over 2004 * 2005 */ 2006 private CellLayout findMatchingPageForDragOver( 2007 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2008 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2009 // with the item being dragged and then choose the one that's closest to the touch point 2010 final int screenCount = getChildCount(); 2011 CellLayout bestMatchingScreen = null; 2012 float smallestDistSoFar = Float.MAX_VALUE; 2013 2014 for (int i = 0; i < screenCount; i++) { 2015 CellLayout cl = (CellLayout)getChildAt(i); 2016 2017 final float[] touchXy = mTempTouchCoordinates; 2018 touchXy[0] = originX + offsetX; 2019 touchXy[1] = originY + offsetY; 2020 2021 // Transform the touch coordinates to the CellLayout's local coordinates 2022 // If the touch point is within the bounds of the cell layout, we can return immediately 2023 cl.getMatrix().invert(mTempInverseMatrix); 2024 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2025 2026 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2027 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2028 return cl; 2029 } 2030 2031 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2032 // Get the center of the cell layout in screen coordinates 2033 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2034 cellLayoutCenter[0] = cl.getWidth()/2; 2035 cellLayoutCenter[1] = cl.getHeight()/2; 2036 mapPointFromChildToSelf(cl, cellLayoutCenter); 2037 2038 touchXy[0] = originX + offsetX; 2039 touchXy[1] = originY + offsetY; 2040 2041 // Calculate the distance between the center of the CellLayout 2042 // and the touch point 2043 float dist = squaredDistance(touchXy, cellLayoutCenter); 2044 2045 if (dist < smallestDistSoFar) { 2046 smallestDistSoFar = dist; 2047 bestMatchingScreen = cl; 2048 } 2049 } 2050 } 2051 return bestMatchingScreen; 2052 } 2053 2054 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2055 DragView dragView, Object dragInfo) { 2056 // When touch is inside the scroll area, skip dragOver actions for the current screen 2057 if (!mInScrollArea) { 2058 CellLayout layout; 2059 int originX = x - xOffset; 2060 int originY = y - yOffset; 2061 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2062 if (shrunken) { 2063 layout = findMatchingPageForDragOver( 2064 dragView, originX, originY, xOffset, yOffset); 2065 2066 if (layout != mDragTargetLayout) { 2067 if (mDragTargetLayout != null) { 2068 mDragTargetLayout.setIsDragOverlapping(false); 2069 mSpringLoadedDragController.onDragExit(); 2070 } 2071 mDragTargetLayout = layout; 2072 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2073 mDragTargetLayout.setIsDragOverlapping(true); 2074 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2075 } 2076 } 2077 } else { 2078 layout = getCurrentDropLayout(); 2079 if (layout != mDragTargetLayout) { 2080 if (mDragTargetLayout != null) { 2081 mDragTargetLayout.onDragExit(); 2082 } 2083 layout.onDragEnter(); 2084 mDragTargetLayout = layout; 2085 } 2086 } 2087 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2088 layout = getCurrentDropLayout(); 2089 2090 final ItemInfo item = (ItemInfo)dragInfo; 2091 if (dragInfo instanceof LauncherAppWidgetInfo) { 2092 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2093 2094 if (widgetInfo.spanX == -1) { 2095 // Calculate the grid spans needed to fit this widget 2096 int[] spans = layout.rectToCell( 2097 widgetInfo.minWidth, widgetInfo.minHeight, null); 2098 item.spanX = spans[0]; 2099 item.spanY = spans[1]; 2100 } 2101 } 2102 2103 if (source instanceof AllAppsPagedView) { 2104 // This is a hack to fix the point used to determine which cell an icon from 2105 // the all apps screen is over 2106 if (item != null && item.spanX == 1 && layout != null) { 2107 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2108 2109 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2110 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2111 dragView.setDragRegion(dragView.getDragRegionLeft(), 2112 dragView.getDragRegionTop(), 2113 layout.getCellWidth(), 2114 dragView.getDragRegionHeight()); 2115 } 2116 } 2117 } 2118 2119 if (mDragTargetLayout != null) { 2120 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2121 float[] localOrigin = { originX, originY }; 2122 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2123 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2124 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2125 } 2126 } 2127 } 2128 } 2129 2130 public void onDragExit(DragSource source, int x, int y, int xOffset, 2131 int yOffset, DragView dragView, Object dragInfo) { 2132 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2133 if (mDragTargetLayout != null) { 2134 mDragTargetLayout.onDragExit(); 2135 } 2136 if (!mIsPageMoving) { 2137 hideOutlines(); 2138 } 2139 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2140 mLauncher.exitSpringLoadedDragMode(); 2141 } 2142 clearAllHovers(); 2143 } 2144 2145 @Override 2146 public void getHitRect(Rect outRect) { 2147 // We want the workspace to have the whole area of the display (it will find the correct 2148 // cell layout to drop to in the existing drag/drop logic. 2149 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2150 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2151 } 2152 2153 /** 2154 * Add the item specified by dragInfo to the given layout. 2155 * @return true if successful 2156 */ 2157 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2158 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2159 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2160 return true; 2161 } 2162 mLauncher.showOutOfSpaceMessage(); 2163 return false; 2164 } 2165 2166 /** 2167 * Drop an item that didn't originate on one of the workspace screens. 2168 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2169 * come from another app altogether. 2170 * 2171 * NOTE: This can also be called when we are outside of a drag event, when we want 2172 * to add an item to one of the workspace screens. 2173 */ 2174 private void onDropExternal(int x, int y, Object dragInfo, 2175 CellLayout cellLayout, boolean insertAtFirst) { 2176 int screen = indexOfChild(cellLayout); 2177 if (dragInfo instanceof PendingAddItemInfo) { 2178 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2179 // When dragging and dropping from customization tray, we deal with creating 2180 // widgets/shortcuts/folders in a slightly different way 2181 // Only set touchXY if you are supporting spring loaded adding of items 2182 int[] touchXY = new int[2]; 2183 touchXY[0] = x; 2184 touchXY[1] = y; 2185 switch (info.itemType) { 2186 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2187 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2188 break; 2189 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2190 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2191 break; 2192 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2193 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2194 break; 2195 default: 2196 throw new IllegalStateException("Unknown item type: " + info.itemType); 2197 } 2198 cellLayout.onDragExit(); 2199 } else { 2200 // This is for other drag/drop cases, like dragging from All Apps 2201 ItemInfo info = (ItemInfo) dragInfo; 2202 View view = null; 2203 2204 switch (info.itemType) { 2205 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2206 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2207 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2208 // Came from all apps -- make a copy 2209 info = new ShortcutInfo((ApplicationInfo) info); 2210 } 2211 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2212 (ShortcutInfo) info); 2213 break; 2214 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2215 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2216 cellLayout, (UserFolderInfo) info, mIconCache); 2217 break; 2218 default: 2219 throw new IllegalStateException("Unknown item type: " + info.itemType); 2220 } 2221 2222 mTargetCell = new int[2]; 2223 if (x != -1 && y != -1) { 2224 // when dragging and dropping, just find the closest free spot 2225 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2226 } else { 2227 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2228 } 2229 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2230 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2231 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2232 cellLayout.onDropChild(view, animateDrop); 2233 cellLayout.animateDrop(); 2234 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2235 2236 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2237 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2238 lp.cellX, lp.cellY); 2239 } 2240 } 2241 2242 /** 2243 * Return the current {@link CellLayout}, correctly picking the destination 2244 * screen while a scroll is in progress. 2245 */ 2246 private CellLayout getCurrentDropLayout() { 2247 // if we're currently small, use findMatchingPageForDragOver instead 2248 if (mIsSmall) return null; 2249 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2250 return (CellLayout) getChildAt(index); 2251 } 2252 2253 /** 2254 * Return the current CellInfo describing our current drag; this method exists 2255 * so that Launcher can sync this object with the correct info when the activity is created/ 2256 * destroyed 2257 * 2258 */ 2259 public CellLayout.CellInfo getDragInfo() { 2260 return mDragInfo; 2261 } 2262 2263 /** 2264 * Calculate the nearest cell where the given object would be dropped. 2265 */ 2266 private int[] findNearestVacantArea(int pixelX, int pixelY, 2267 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2268 2269 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2270 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2271 2272 // Find the best target drop location 2273 return layout.findNearestVacantArea( 2274 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2275 } 2276 2277 void setLauncher(Launcher launcher) { 2278 mLauncher = launcher; 2279 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2280 2281 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2282 if (mCustomizationDrawer != null) { 2283 mCustomizationDrawerContent = 2284 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2285 } 2286 } 2287 2288 public void setDragController(DragController dragController) { 2289 mDragController = dragController; 2290 } 2291 2292 public void onDropCompleted(View target, boolean success) { 2293 if (success) { 2294 if (target != this && mDragInfo != null) { 2295 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2296 cellLayout.removeView(mDragInfo.cell); 2297 if (mDragInfo.cell instanceof DropTarget) { 2298 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2299 } 2300 // final Object tag = mDragInfo.cell.getTag(); 2301 } 2302 } else if (mDragInfo != null) { 2303 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2304 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2305 } 2306 2307 mDragOutline = null; 2308 mDragInfo = null; 2309 } 2310 2311 @Override 2312 public void onDragViewVisible() { 2313 ((View) mDragInfo.cell).setVisibility(View.GONE); 2314 } 2315 2316 public boolean isDropEnabled() { 2317 return true; 2318 } 2319 2320 @Override 2321 protected void onRestoreInstanceState(Parcelable state) { 2322 super.onRestoreInstanceState(state); 2323 Launcher.setScreen(mCurrentPage); 2324 } 2325 2326 @Override 2327 public void scrollLeft() { 2328 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2329 super.scrollLeft(); 2330 } 2331 } 2332 2333 @Override 2334 public void scrollRight() { 2335 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2336 super.scrollRight(); 2337 } 2338 } 2339 2340 @Override 2341 public void onEnterScrollArea(int direction) { 2342 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2343 mInScrollArea = true; 2344 mPendingScrollDirection = direction; 2345 2346 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2347 final CellLayout layout = (CellLayout) getChildAt(page); 2348 2349 if (layout != null) { 2350 layout.setIsDragOverlapping(true); 2351 2352 if (mDragTargetLayout != null) { 2353 mDragTargetLayout.onDragExit(); 2354 mDragTargetLayout = null; 2355 } 2356 } 2357 } 2358 } 2359 2360 private void clearAllHovers() { 2361 final int childCount = getChildCount(); 2362 for (int i = 0; i < childCount; i++) { 2363 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2364 } 2365 mSpringLoadedDragController.onDragExit(); 2366 } 2367 2368 @Override 2369 public void onExitScrollArea() { 2370 if (mInScrollArea) { 2371 mInScrollArea = false; 2372 mPendingScrollDirection = DragController.SCROLL_NONE; 2373 clearAllHovers(); 2374 } 2375 } 2376 2377 public Folder getFolderForTag(Object tag) { 2378 final int screenCount = getChildCount(); 2379 for (int screen = 0; screen < screenCount; screen++) { 2380 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2381 int count = currentScreen.getChildCount(); 2382 for (int i = 0; i < count; i++) { 2383 View child = currentScreen.getChildAt(i); 2384 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2385 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2386 Folder f = (Folder) child; 2387 if (f.getInfo() == tag && f.getInfo().opened) { 2388 return f; 2389 } 2390 } 2391 } 2392 } 2393 return null; 2394 } 2395 2396 public View getViewForTag(Object tag) { 2397 int screenCount = getChildCount(); 2398 for (int screen = 0; screen < screenCount; screen++) { 2399 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2400 int count = currentScreen.getChildCount(); 2401 for (int i = 0; i < count; i++) { 2402 View child = currentScreen.getChildAt(i); 2403 if (child.getTag() == tag) { 2404 return child; 2405 } 2406 } 2407 } 2408 return null; 2409 } 2410 2411 2412 void removeItems(final ArrayList<ApplicationInfo> apps) { 2413 final int screenCount = getChildCount(); 2414 final PackageManager manager = getContext().getPackageManager(); 2415 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2416 2417 final HashSet<String> packageNames = new HashSet<String>(); 2418 final int appCount = apps.size(); 2419 for (int i = 0; i < appCount; i++) { 2420 packageNames.add(apps.get(i).componentName.getPackageName()); 2421 } 2422 2423 for (int i = 0; i < screenCount; i++) { 2424 final CellLayout layout = (CellLayout) getChildAt(i); 2425 2426 // Avoid ANRs by treating each screen separately 2427 post(new Runnable() { 2428 public void run() { 2429 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2430 childrenToRemove.clear(); 2431 2432 int childCount = layout.getChildCount(); 2433 for (int j = 0; j < childCount; j++) { 2434 final View view = layout.getChildAt(j); 2435 Object tag = view.getTag(); 2436 2437 if (tag instanceof ShortcutInfo) { 2438 final ShortcutInfo info = (ShortcutInfo) tag; 2439 final Intent intent = info.intent; 2440 final ComponentName name = intent.getComponent(); 2441 2442 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2443 for (String packageName: packageNames) { 2444 if (packageName.equals(name.getPackageName())) { 2445 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2446 childrenToRemove.add(view); 2447 } 2448 } 2449 } 2450 } else if (tag instanceof UserFolderInfo) { 2451 final UserFolderInfo info = (UserFolderInfo) tag; 2452 final ArrayList<ShortcutInfo> contents = info.contents; 2453 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2454 final int contentsCount = contents.size(); 2455 boolean removedFromFolder = false; 2456 2457 for (int k = 0; k < contentsCount; k++) { 2458 final ShortcutInfo appInfo = contents.get(k); 2459 final Intent intent = appInfo.intent; 2460 final ComponentName name = intent.getComponent(); 2461 2462 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2463 for (String packageName: packageNames) { 2464 if (packageName.equals(name.getPackageName())) { 2465 toRemove.add(appInfo); 2466 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2467 removedFromFolder = true; 2468 } 2469 } 2470 } 2471 } 2472 2473 contents.removeAll(toRemove); 2474 if (removedFromFolder) { 2475 final Folder folder = getOpenFolder(); 2476 if (folder != null) 2477 folder.notifyDataSetChanged(); 2478 } 2479 } else if (tag instanceof LiveFolderInfo) { 2480 final LiveFolderInfo info = (LiveFolderInfo) tag; 2481 final Uri uri = info.uri; 2482 final ProviderInfo providerInfo = manager.resolveContentProvider( 2483 uri.getAuthority(), 0); 2484 2485 if (providerInfo != null) { 2486 for (String packageName: packageNames) { 2487 if (packageName.equals(providerInfo.packageName)) { 2488 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2489 childrenToRemove.add(view); 2490 } 2491 } 2492 } 2493 } else if (tag instanceof LauncherAppWidgetInfo) { 2494 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2495 final AppWidgetProviderInfo provider = 2496 widgets.getAppWidgetInfo(info.appWidgetId); 2497 if (provider != null) { 2498 for (String packageName: packageNames) { 2499 if (packageName.equals(provider.provider.getPackageName())) { 2500 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2501 childrenToRemove.add(view); 2502 } 2503 } 2504 } 2505 } 2506 } 2507 2508 childCount = childrenToRemove.size(); 2509 for (int j = 0; j < childCount; j++) { 2510 View child = childrenToRemove.get(j); 2511 layout.removeViewInLayout(child); 2512 if (child instanceof DropTarget) { 2513 mDragController.removeDropTarget((DropTarget)child); 2514 } 2515 } 2516 2517 if (childCount > 0) { 2518 layout.requestLayout(); 2519 layout.invalidate(); 2520 } 2521 } 2522 }); 2523 } 2524 } 2525 2526 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2527 final int screenCount = getChildCount(); 2528 for (int i = 0; i < screenCount; i++) { 2529 final CellLayout layout = (CellLayout) getChildAt(i); 2530 int childCount = layout.getChildCount(); 2531 for (int j = 0; j < childCount; j++) { 2532 final View view = layout.getChildAt(j); 2533 Object tag = view.getTag(); 2534 if (tag instanceof ShortcutInfo) { 2535 ShortcutInfo info = (ShortcutInfo)tag; 2536 // We need to check for ACTION_MAIN otherwise getComponent() might 2537 // return null for some shortcuts (for instance, for shortcuts to 2538 // web pages.) 2539 final Intent intent = info.intent; 2540 final ComponentName name = intent.getComponent(); 2541 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2542 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2543 final int appCount = apps.size(); 2544 for (int k = 0; k < appCount; k++) { 2545 ApplicationInfo app = apps.get(k); 2546 if (app.componentName.equals(name)) { 2547 info.setIcon(mIconCache.getIcon(info.intent)); 2548 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2549 new FastBitmapDrawable(info.getIcon(mIconCache)), 2550 null, null); 2551 } 2552 } 2553 } 2554 } 2555 } 2556 } 2557 } 2558 2559 void moveToDefaultScreen(boolean animate) { 2560 if (mIsSmall || mIsInUnshrinkAnimation) { 2561 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2562 } else if (animate) { 2563 snapToPage(mDefaultPage); 2564 } else { 2565 setCurrentPage(mDefaultPage); 2566 } 2567 getChildAt(mDefaultPage).requestFocus(); 2568 } 2569 2570 void setIndicators(Drawable previous, Drawable next) { 2571 mPreviousIndicator = previous; 2572 mNextIndicator = next; 2573 previous.setLevel(mCurrentPage); 2574 next.setLevel(mCurrentPage); 2575 } 2576 2577 @Override 2578 public void syncPages() { 2579 } 2580 2581 @Override 2582 public void syncPageItems(int page) { 2583 } 2584 2585} 2586